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Unanswered Questions

1,357 questions with no upvoted or accepted answers
9
votes
1answer
1k views

Is it possible in FFMPEG to change scale over time?

Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
8
votes
1answer
3k views

How to capture DVB-T using a generic RTL2832U USB stick on a mac

Is there a way to capture DVB-T video using a generic USB DVB-T dongle on a mac? I've read many examples of people using VLC on Linux/PCs, but can't see any generic drivers on Mac OSX?
7
votes
0answers
2k views

How to produce a zoom animation of a video source with ffmpeg?

I'd like to create a zoom-in animation over numerous frames of a video clip. I've tried a couple of approaches without much luck. ffmpeg -i test-10s.mp4 -vf "zoompan=z='zoom+0.001'" zoompan-10s.mp4 ...
6
votes
1answer
581 views

Making a Digital clock with a specific time for Sony Vegas Platinum 12

I'm using Vegas Platinum 12 and I want to create a time code in a video. But here is the catch. I want to start the clock at a specific time and have the count start at that time, i.e 05:21:34 or 21:...
5
votes
1answer
87 views

How to detect whether a video is shaky

I need to stabilize a video only when the video is shaky , I have succesfully stabilized a video using ffmpeg and I do not need to stabilize all the videos , I only need to stabilize the videos which ...
5
votes
1answer
87 views

How do I apply effects to a layer at its current resolution (scaled up by the layer's scale property) instead of its original resolution?

I'm a sprite animator in Adobe After Effects. For example, I want to be able to skew a layer, but because this image is very small on its own, when I scale up its scale property and then skew it ...
5
votes
5answers
676 views

Most-efficient inexpensive way to speed/slow video track to sync with audio track?

My machines are a few Android tablets (not the newest, but not too old either) as well as a Mac running OS X 10.9.5 (not about to upgrade the OS - long and irrelevant story why). Sometimes I do a ...
4
votes
1answer
39 views

Is there an online video server that can show paneable extremely large videos?

I want to turn a set of high-resolution satellite images of the Earth (10,000x10,000 pixels) into a time-lapse video. But instead of downsizing the images, I would like that people could zoom into ...
4
votes
1answer
21 views

Import secondary audio track along with video mpg into Adobe Premiere Pro

I've been trying for hours to import an mpg along with its secondary audio track into Adobe Premiere Pro. Only the primary track is imported. I know this mpg has two tracks because I can play the ...
4
votes
1answer
45 views

Is it possible to track continue motion tracking on another point in After Effects CC?

I have green screen footage and have about 4 points on the green screen but sometimes the actor moves and hide the points. He will hide all point but not at the same time. Is it possible to motion ...
4
votes
2answers
44 views

Projection mapping as an external display for a computer

I'm using a projector to display the content of my computer, as one would do with a regular screen. Now I want to do the projection on several panels that have different orientations. Hence I'm ...
4
votes
2answers
70 views

How do I create a random word title?

I really don't know what is the best way to phrase this. But basically what I want is to have a single word on the screen, e.g. AUGUST. So when the title first starts, all 6 letters will be ...
4
votes
1answer
389 views

Largest input image size when encoding a video?

I got a bunch of really large 16 bit videos, approaching 65535×65535 pixels in size. These are essentially high quality timelapse panoramas. I want to convert them to a 7680×4320 movie (8K UHD, 8 bit)....
4
votes
2answers
74 views

Easily replace clips in Premiere Pro

I have a couple hundred video clips in a premiere pro project (uncompressed avi), and it is burning too much space on my hard disk. I want to compress these clips (perhaps to x264). Is there an easy ...
4
votes
0answers
316 views

GStreamer mpegtsmux produces empty output file

I'm trying to construct a GStreamer pipeline to transcode MPEG2 video and MPEG1 audio in a MPEGTS container to H.264 and AAC and output to a filesink. The problem is: the output file is empty. If I ...

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